Running up and down a stairwell is a great workout, but it can get stale quickly. Stair exercises can shake up the boredom while also challenging the lower body even more. Additionally, it's also a no-excuse workout - all you have to do is show up! Whether it's at your local park, office, or apartment building, we are pretty certain there is a stairwell near you. Learn these five easy moves, and get ready to make the most of your next excursion to the park!